I went to get my camper to start doing some work on it and my controler told me no conection. I know my controler and wiring is fine because it works on other trailers just fine. My question is does TT electric brakes use the ground for my battery? I do not have the battery in it because I take it out for the winter and did not take it back with me to get the trailer.

ArcticDodge wrote:No battery ='d No brakes for me when my batteries got shorted out while on the road out due to factory cable damage screw up.

I am hoping that it is because I dont have a battery in the camper. I took it out before I took it to storage and did not notice if I have brakes. It is only a couple miles and max 35mph road speeds so thats why I did not notice, I guess I need to pay more attention to that.

The Trailer and the tow vehicle should share ground which in this 12 volt case the negative side of tow vehicle battery and trailer house battery. These are not series type connections that need the trailer battery to be in to have the negative battery cable of your trailer battery the same (node) of your tow vehicle. Many variables here but make sure your trailer battery cables cannot short out and if maybe that happened there should be a fuse in the trailer brake wire that may have opened causing this problem. If you have a digital VOM volt ohm meter I can give you some trouble shooting to do to see if that open circuit (blown fuse) could be the issue.

kpmacaz wrote:The Trailer and the tow vehicle should share ground which in this 12 volt case the negative side of tow vehicle battery and trailer house battery. These are not series type connections that need the trailer battery to be in to have the negative battery cable of your trailer battery the same (node) of your tow vehicle. Many variables here but make sure your trailer battery cables cannot short out and if maybe that happened there should be a fuse in the trailer brake wire that may have opened causing this problem. If you have a digital VOM volt ohm meter I can give you some trouble shooting to do to see if that open circuit (blown fuse) could be the issue.

I tape my + cable off when I take the battery out so I dont blow the fuse in my truck so I am sure I did not short the wires out. I know that the brake circuit is open because the controler is not seeing the ground thru the coil on the brakes, I just did not know if it complets the circuit thru the battery ground. I am going to put the battery in it next weekend and see if my problem goes away if not I will bring my fluke home from work and find out what is wrong with it.

What code does your brake controller display? such as: 0.9 flashing 2 times a second or a steady display indicates a bad ground to your tow vehicle battery. Your tow vehicle produces the voltage and current to your electromagnets in you trailer brakes but your electromagnets in your trailer brakes closes that current path via ground or negative of your trailer back to your tow vehicle negative(ground).

kpmacaz wrote:What code does your brake controller display? such as: 0.9 flashing 2 times a second or a steady display indicates a bad ground to your tow vehicle battery. Your tow vehicle produces the voltage and current to your electromagnets in you trailer brakes but your electromagnets in your trailer brakes closes that current path via ground or negative of your trailer back to your tow vehicle negative(ground).

My controler shows n.c. which means no conection. I dont think it is any thing on the truck because I pulled my dads skidsteer back to his place that night and it worked fine.